style: Apply Black and isort formatting after Cassandra fixes

- Format cassandra_manager.py, cassandra_parser_manager.py with Black
- Fix import ordering with isort in affected files
- Ensure all code quality checks pass after optional dependency changes

Code Quality Status:
✅ Black formatting: 33 files compliant
✅ isort import ordering: All files compliant
✅ flake8 linting: Zero violations
✅ MyPy type checking: Clean with optional imports
✅ Bandit security: No security issues (warnings for nosec comments expected)
✅ pytest: 82 tests collected, Cassandra tests properly skipped

Author: tsrdatatech

src/database/cassandra_manager.py

@@ -13,22 +13,24 @@
 try:
     from cassandra.auth import PlainTextAuthProvider
     from cassandra.cluster import Cluster
+
     CASSANDRA_AVAILABLE = True
 except ImportError:
     # Cassandra driver not available - create dummy classes for testing
     CASSANDRA_AVAILABLE = False
-    
+
     class PlainTextAuthProvider:
         def __init__(self, *args, **kwargs):
             pass
-    
+
     class Cluster:
         def __init__(self, *args, **kwargs):
             pass
-        
+
         def connect(self):
             raise RuntimeError("Cassandra driver not installed")
 
+
 from src.core.logger import logger
 from src.schemas.news import NewsArticle
 

src/database/cassandra_parser_manager.py

@@ -9,15 +9,22 @@
 from src.core.parser_manager import ParserManager as BaseParserManager
 
 try:
-    from src.database.cassandra_manager import CassandraConfig, CassandraManager, CASSANDRA_AVAILABLE
+    from src.database.cassandra_manager import (
+        CASSANDRA_AVAILABLE,
+        CassandraConfig,
+        CassandraManager,
+    )
 except ImportError:
     CASSANDRA_AVAILABLE = False
+
     # Create dummy classes for when Cassandra is not available
     class CassandraConfig:
         pass
+
     class CassandraManager:
         pass
 
+
 from src.schemas.news import NewsArticle
 
 

tests/test_cassandra_integration.py

@@ -7,7 +7,11 @@
 import pytest
 
 try:
-    from src.database.cassandra_manager import CassandraConfig, CassandraManager, CASSANDRA_AVAILABLE
+    from src.database.cassandra_manager import (
+        CASSANDRA_AVAILABLE,
+        CassandraConfig,
+        CassandraManager,
+    )
     from src.schemas.news import NewsArticle
 except ImportError:
     CASSANDRA_AVAILABLE = False